Effects of Biomass and Soil Water Content Distribution on Cosmic Ray Neutron Probe Measurement
文献类型：期刊论文
| 作者 | Wang, Qiuming4; Shi, Liang1; Zhao, Xu2; Fan, Jun3 |
| 刊名 | WATER
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 15期号:15页码:21 |
| 关键词 | cosmic ray neutron probe soil water content unmanned aerial vehicle vegetation calibration Loess Plateau |
| DOI | 10.3390/w15152766 |
| 通讯作者 | Fan, Jun(fanjun@ms.iswc.ac.cn) |
| 英文摘要 | Cosmic ray neutron probes (CRNPs) provide continuous monitoring of average near-surface soil water content (SWC) on hectometer scales. However, the performance of CRNPs on surfaces of highly heterogeneous vegetation and SWC remains uncertain. This study evaluated three vegetation calibration methods with the correction of vegetation distribution developed for a CRNP on the Loess Plateau of China. Three plots with different vegetation distributions were selected and equipped with CRNPs and SWC sensors, and their biomass as well as distribution were measured by an unmanned aerial vehicle (UAV) equipped with a RedEdge multispectral camera. We found that the parameter N-0, which is neutron flux in dry soil, was best represented by the biomass at average growth conditions of the monitoring period, yielding the lowest RMSE (0.068). The Veg-N-0 vegetation calibration method reduced the RMSE the most between the CRNP SWC and the Kriging-weighted SWC, and the correction of the spatial distribution of the vegetation further reduced the RMSE. The cooperation between the CRNP and the UAV could obtain the regional averaged SWC accurately. This study makes up for the lack of vegetation calibration for the CRNP on the Loess Plateau, which should help develop sustainable vegetation management and ecohydrological management strategies on the Loess Plateau, so as to protect water security in the region. |
| WOS关键词 | LOESS PLATEAU ; MOISTURE ; CALIBRATION ; QUANTIFICATION ; CATCHMENT ; TEXTURES ; DATASETS ; NETWORK ; SENSORS ; REGION |
| 资助项目 | National Natural Science Foundation of China[42101060] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001046431500001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196292]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Fan, Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China 3.Chinese Acad Sci & Minist Water Resource, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qiuming,Shi, Liang,Zhao, Xu,et al. Effects of Biomass and Soil Water Content Distribution on Cosmic Ray Neutron Probe Measurement[J]. WATER,2023,15(15):21. |
| APA | Wang, Qiuming,Shi, Liang,Zhao, Xu,&Fan, Jun.(2023).Effects of Biomass and Soil Water Content Distribution on Cosmic Ray Neutron Probe Measurement.WATER,15(15),21. |
| MLA | Wang, Qiuming,et al."Effects of Biomass and Soil Water Content Distribution on Cosmic Ray Neutron Probe Measurement".WATER 15.15(2023):21. |
入库方式： OAI收割
来源：地理科学与资源研究所
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